Transbilayer Complementarity of Phospholipids. A Look beyond the Fluid Mosaic Model
摘要:
Lipid-lipid interactions across a phospholipid bilayer were probed by measuring the nearest-neighbor preferences of exchangeable phospholipid monomers derived from 1,2-dimyristoyl-sn-glycero-3-phosphoethanolamine (DMPE) and 1,2-distearoyl-sn-glycero-3-phosphoethanolamine (DSPE) in the presence of nonexchangeable DMPE- or DSPE-based dimers. Each of these permanent dimers promoted homophospholipid association to the same extent, whereas the corresponding nonexchangeable monomers were without effect. These results support a model in which the longer phospholipids in one monolayer leaflet preferentially associate with shorter ones in the adjoining monolayer. Such transbilayer complementarity is likely to play an important role in stabilizing biological membranes and also in promoting a compositional interdependence of their two lipid leaflets.
Transbilayer Complementarity of Phospholipids. A Look beyond the Fluid Mosaic Model
摘要:
Lipid-lipid interactions across a phospholipid bilayer were probed by measuring the nearest-neighbor preferences of exchangeable phospholipid monomers derived from 1,2-dimyristoyl-sn-glycero-3-phosphoethanolamine (DMPE) and 1,2-distearoyl-sn-glycero-3-phosphoethanolamine (DSPE) in the presence of nonexchangeable DMPE- or DSPE-based dimers. Each of these permanent dimers promoted homophospholipid association to the same extent, whereas the corresponding nonexchangeable monomers were without effect. These results support a model in which the longer phospholipids in one monolayer leaflet preferentially associate with shorter ones in the adjoining monolayer. Such transbilayer complementarity is likely to play an important role in stabilizing biological membranes and also in promoting a compositional interdependence of their two lipid leaflets.
[EN] TUNABLE FLUORESCENCE USING CLEAVABLE LINKERS<br/>[FR] FLUORESCENCE RÉGLABLE À L'AIDE DE LIEURS CLIVABLES
申请人:AGENCY SCIENCE TECH & RES
公开号:WO2014171899A1
公开(公告)日:2014-10-23
The invention relates to cleavable chemistry in general, and in particular, to tunable fluoresence using cleavable linkers present in fluorochrome-quencher conjugates.
Nonenzymatic sequence-specific cleavage of single-stranded DNA to nucleotide resolution. DNA methyl thioether probes
作者:Brent L. Iverson、Peter B. Dervan
DOI:10.1021/ja00238a041
日期:1987.2
We report the sequence-specificcleavage of single-strandedDNA to nucleotideresolution using chemically activated oligodeoxynucleotide methylthioether hybridization probes (DNAMT). 5-[3-[ [3-(Methylthio)propionyl]amino]-trans-1- propenylldeoxyuridine S’-triphosphate (MT-dUTP) was enzymatically incorporated into an oligonucleotide duplex by using the Klenow fragment of DNA polymerase. Activation
A method for selectively orienting molecules on a surface of a solid support. The method includes: (a) attaching a linker molecule to the surface of the solid support, the linker molecule including a head group that is capable of binding to the solid support, and a tail group that is capable of chelating to a metal ion; (b) subsequently treating the solid support with a solution containing the metal ion; (c) attaching a metal ion chelating tag to the molecules to form tagged molecules; and (d) capturing the tagged molecules on the solid support by contacting it with the tagged molecules to form a monolayer of molecules on the surface of the solid support in which a majority of the molecules are held in the same orientation with respect to the surface.
PROTEIN MONOMER, PROTEIN POLYMER OBTAINED FROM SAID MONOMER, AND DEVICE THAT CONTAINS THEM
申请人:Hayashi Takashi
公开号:US20110130550A1
公开(公告)日:2011-06-02
A protein polymer having a larger molecular weight is provided by regularly arranging a protein having a large molecular weight. The protein polymer having a large molecular weight can be obtained using a protein monomer represented by formula (I) or a salt thereof:
wherein R
1
, R
2
, R
3
, R
4
, Y, and X are as defined in the specification.